This new Benelli M4 Tactical shotgun fires the 12 gauge shell. It has an 18 1/2" barrel with an overall matte black finish. This semi-auto shotgun has a flat top picatinny receiver rail, rear ghost ring sight, and a rubber pistol grip. It comes with choke tube(modified), manual, small bottle of lubricant, and box. This Benelli holds 4 rounds and is model #11707.